99668966 has 4 divisors (see below), whose sum is σ = 149503452. Its totient is φ = 49834482.

The previous prime is 99668963. The next prime is 99668981. The reversal of 99668966 is 66986699.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99668963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24917240 + ... + 24917243.

It is an arithmetic number, because the mean of its divisors is an integer number (37375863).

Almost surely, 2^99668966 is an apocalyptic number.

99668966 is a deficient number, since it is larger than the sum of its proper divisors (49834486).

99668966 is a wasteful number, since it uses less digits than its factorization.

99668966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49834485.

The product of its digits is 7558272, while the sum is 59.

The square root of 99668966 is about 9983.4345793419. The cubic root of 99668966 is about 463.6461425896.

The spelling of 99668966 in words is "ninety-nine million, six hundred sixty-eight thousand, nine hundred sixty-six".